28987160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:960

約数の個数: 64

約数和(自身を含む): 70329600

約数和(自身を除く): 41342440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 887, 1634, 1720, 1774, 3268, 3548, 4085, 4435, 6536, 7096, 8170, 8870, 16340, 16853, 17740, 32680, 33706, 35480, 38141, 67412, 76282, 84265, 134824, 152564, 168530, 190705, 305128, 337060, 381410, 674120, 724679, 762820, 1449358, 1525640, 2898716, 3623395, 5797432, 7246790, 14493580, 28987160]

約数ペア:

[(1, 28987160), (2, 14493580), (4, 7246790), (5, 5797432), (8, 3623395), (10, 2898716), (19, 1525640), (20, 1449358), (38, 762820), (40, 724679), (43, 674120), (76, 381410), (86, 337060), (95, 305128), (152, 190705), (172, 168530), (190, 152564), (215, 134824), (344, 84265), (380, 76282), (430, 67412), (760, 38141), (817, 35480), (860, 33706), (887, 32680), (1634, 17740), (1720, 16853), (1774, 16340), (3268, 8870), (3548, 8170), (4085, 7096), (4435, 6536)]